"Sun breathing,third form:RAGING SUN." Tanjiro's father blocks tanjiro's attack and calmly says "Sun breathing,Eigth form:sunflower thrust." But before it can hit tanjiro he dodges Halo breathing, tenth form: Gods decision. Tanjiro gets a slight boost in power and speed. He then prepares his next form of halo breathing 'Eigth form:Heaven's illusion' tanjiro rushes forward and manages to get a cut on Tanjuro's abdomen. He then backs away.
"You have improved tanjiro, you have the strength and speed of a pillar, I am proud of you." "Thank you father, I will continue training halo breathing to one day surpass sun breathing." Just then tanjiro's body collapses, his hair turns white and black and his eyes change. "Tanjiro are you okay." His father rushes over to him with worry filling his eyes. Tanjiro looks up with a smile that instantly calmed his father. "I'm fine, I just need rest." Tanjuro then brings this son back to their estates house.
"Oh my, what happened to him." Kie Kamado was now killing Tanjuro with questions and didn't give her husband a second to answer. "He's fine, his body is just getting rest from being pushed to its limits." He lays tanjiro down and goes back to Kie. He sits down next to her as the sun slowly gets covered by clouds. "Listen Kie, that boy... he is extremely kind, he puts others before himself and I'm afraid it will get him killed in the near future." The always worried wife asked "Why are you so sure about this." Tanjuro explained how one of their ancestors had had muzan trapped in a corner for the second time ever and that his comrade had rushed into the fight not realizing that he was running to his death.
"Our ancestor sacrificed himself for his friend and got killed, muzan escaped from our family's grip once again." He looked at Kie seriously. "If tanjiro acts the same way in battle he won't be surviving long." His wife stands up and stares at the sun that is revealing itself once more. "Tanjuro, I have learnt something that allows a power boost when fighting, it is called the selfless state, I think this is the solution to our little problem with tanjiro." "No." A voice calls out. "I will not learn it, I know how to steel my emotions well enough."
"We can't stop you, so all I say is be careful out there, you are a slayer now." As Tanjuro says that a knock is heard at the door. Kie enters the house to go check on the other children as Tanjiro and Tanjuro check who's at the gate. They open it to see a sword smith. "Good morning sir, welc..." "I want to see the red blade, make sure one of your blades turns red or I will kill you." "I do not know what color the blade will be sir." "And with all due respect what do you mean by blades.?" "I WANT A RED BLADE." "Ok I-I'll try my best sir." Tanjiro was really confused but kept a smile on his face. "Do you want to come inside sir?" Tanjuro gestures to come in and the man does. They get to the porch and the man says "Just hold the blades and it will change colors.
Tanjiro does as the swords smith says and his longer blade looks like this:

His shorter blade like this:

(For offline users the first one's blade is black, his grip is black and blue, and his guard looks like clubs from solitaire, his sheath is solid black. His second swords blade is black with a red rigid line going through, his grip is black with a curved type of star. The guard looked like 3 large coins, and the sheath is black with gold little flowers on it.)
"I am partially satisfied with the results, although I wish there was a solid red blade he said scribbling into a notebook. "Well bye." When the sword smith leaves a white crow shows up. "CAW CAW YOUR FIRST MISSION, YOUR FIRST MISSION ." "Waaaa, already." Tanjiro puts on his uniform and haori.

He puts his blades on is waste and runs off. "BYE FATHER SAY BYE TO EVERYBODY FOR ME!!" "BYE TANJIRO, GOOD LUCK." "CAW CAW HEAD TO MOUNTAIN HAKI, A DEMON HAS BEEN KILLING COUNTLESS SLAYERS GO THERE CAW CAW." Tanjiro moves extremely fast and get to the mountain after 3 days, it was night and tanjiro had been exploring the mountain when a trail of fire is shot out at him. He dodges it and unsheathed one of his blades and holds it out. That's when a demon with a sturdy build jumps out and tries to punch tanjiro in his gut.
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Halo breathing tanjiro
FanfictionThis fanfic is about tanjiro using two new breathing style and sun breathing. He would be his vs. Muzan strength strength from the start. Kanao will be a male and he will be a close friend of tanjiro. Ships are: tanjiro x oc, kanao x Oc, Giyu x S...